Bump symfony/serializer from 4.4.20 to 4.4.35

Bumps [symfony/serializer](https://github.com/symfony/serializer) from 4.4.20 to 4.4.35.
- [Release notes](https://github.com/symfony/serializer/releases)
- [Changelog](https://github.com/symfony/serializer/blob/5.3/CHANGELOG.md)
- [Commits](symfony/serializer@v4.4.20...v4.4.35)

---
updated-dependencies:
- dependency-name: symfony/serializer
  dependency-type: direct:production
...

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